don't run scripted with incompatible versions of sbt on JDK17

.github/workflows/ci.yml

@@ -29,7 +29,7 @@ jobs:
       - uses: olafurpg/setup-scala@v13
         with:
           java-version: 17
-      - run: sbt test scripted
+      - run: sbt "test; scripted sbt-scalafix/*"
   windows:
     name: Windows tests
     runs-on: windows-latest

build.sbt

@@ -50,8 +50,12 @@ scalaVersion := "2.12.15"
 // keep this as low as possible to avoid running into binary incompatibility such as https://github.com/sbt/sbt/issues/5049
 pluginCrossBuild / sbtVersion := "1.2.1"
 
-// first release that can build 2.13 (as it bring a Zinc version with a compiler-bridge published for 2.13)
-scriptedSbt := "1.2.7"
+scriptedSbt := {
+  if (System.getProperty("java.specification.version").toDouble < 17)
+    "1.2.7" // first release that can build 2.13 (as it bring a Zinc version with a compiler-bridge published for 2.13)
+  else
+    "1.6.0" // first release that supports JDK17
+}
 
 libraryDependencies += compilerPlugin(scalafixSemanticdb)